The Ottawa free trader. [volume] (Ottawa, Ill.) 1843-1916, 1887-10-29
oped .everal very good incubators by the

oped several very good incubators by the
use Of which fairly satisfactory results
have been obtained. In careful hands the
better class OF incubators give good re-
suits, but intelligent attention is an abso-
lutte necessity not only In the management
of the incubators but In the care OF the
chicks after they are Matched. The supply
of heat In incubators must be regular, and
amateurs, IN o rule, fail In keeping an
even temperature. Beale, the well known
English authority. says: mo part OF an
ordinary dwelling Is as good rs the cellar
TO set the incubator In. Here the temper
AZURE varies but little between day and
night, and one day when the thermometer
may stand at IS degs. and the next to
zero-a change which not unfrequently
occurs several times each winter in the
northern states-and all parts OF the house
feel more or less"
Numbered with the better class Of self
regulating incubators is machine con-
sisting of small water heater which
warns the water in n tank placed over
the egg chamber. The source Of heat
may be either Kerosene oil or gas.
The eggs, placed in trays, are warmed by
radiation on the upper surface only. Tn
der the trays are shallow pans Of water,
six to ten degrees cooler than the eggs,
the aim being to initiate the conditions
which are observed when hens make their
nests on the ground. The air in the egg
chamber is also mostened by water from
troughs suspended above the eggs. Ven
tilation Is provided through tubes which
introduce constant flow Of fresh air
close under the tank, thus warming it
hafnra ~ in contact with the
eggs. The impure air is taken out
from the bottom. All the eggs are
turned at one time by means OF
an ingenious continuance Of the egg tray.
A set of thermostatic bars above the
eggs raise and lower the flame Of the lamp
or gas burner, and thus adapt the heat
given out with changes Of temperature in
the room, and hold the heat Of the ma
chine close to the desired point by n. con-
slant action. There is II chamber under
the egg trap which is used rs nursery
for the chickens.
Another well known machine, made
similar to the above that is, the water
tank is above the eggs etc, etc, possesses
the popularity OF doubling its capacity
after the first ten days, with double
layer Of eggs. Experienced hatchers diff
fer in their opinions as to the merits OF
this feature.
A comparatively new incubator has
no water tank, and no water is en-
ployed except to sup, ly moisture. The
desired warmth to the eggs is impaired by
mir warmed by coming in contact with
two metallic lamp fues. Then there is an
incubator which is peculiar in having no
automatic regulating apparatus. This
machine consists of two tanks, placed one
above and one beneath the egg drawer,
and connected by tubes in such way as
TO cause very free circulation OF the
water. The source OF heat is a kerosene
lamp under the center of the lower tank
The flame of this is regulated according to
the judgment of the attendant.
In careful hands machines such rs have
been described give fair results. The hen,
however, remains the only certain incu-
bator for inexperienced busy or careless
folks, who will not give patient, persistent
attention to the artificial ones.